Post Date:17,Oct,2022
Sodium gluconate is generally used alone, but can also be used in combination with other retarders such as carbohydrate phosphates. Sodium gluconate is a crystalline powder. are produced under properly defined and controlled conditions. This compound is chemically pure and non-corrosive. Quality is constant. This feature guarantees reliable and repeatable results in its application. The water-to-cement ratio (W/C) can be reduced by adding a water-reducing agent to sodium gluconate as a water-reducing agent.
The water and content remain the same while the water content decreases, and the W/C ratio remains the same. At this time, sodium gluconate acts as a cement reducer. In general, two aspects are important to concrete performance: shrinkage and heat production. Sodium Gluconate as Retarder Sodium gluconate can significantly retard the initial and final setting time of concrete. When the dosage is below 0.15%, the logarithm of the initial solidification time is proportional to the compounding amount, that is, the compounding amount is doubled. The time to onset of solidification is delayed by a factor of 10, which enables work to be extended from a few hours to several days without compromising strength. This is an important advantage, especially on hot days and longer periods of time.
As a retarder, sodium gluconate has been widely used in concrete. A small amount of research and engineering practice has shown that: the combined use of sodium gluconate and superplasticizer can improve water reducing rate, reduce slump loss, and improve water reducing agent. The adaptability to cement is very obvious. However, due to improper use in engineering, it will lead to abnormal coagulation of concrete, and high-level engineering events will be forced through late, resulting in great economic losses.Therefore, when using sodium gluconate as a concrete additive, the actual situation, such as the environment, weather, concrete dosage, etc., should be used as a reference, so as to ensure the maximum benefit.
Post time: Oct-17-2022